import { describe, expect, test } from "bun:test";
import {
  buildFormSchema,
  parseStoredDraft,
  prepareInitialState,
  type Question,
} from "./form-client";

const questions: Question[] = [
  {
    id: "choice",
    formId: "form",
    type: "radio",
    label: "Choice",
    imageUrl: null,
    displayOrder: 0,
    required: true,
    options: ["A", "B"],
    allowOther: true,
    imageAnswerMode: "none",
  },
  {
    id: "tags",
    formId: "form",
    type: "checkbox",
    label: "Tags",
    imageUrl: null,
    displayOrder: 1,
    required: false,
    options: ["A", "B"],
    allowOther: true,
    imageAnswerMode: "none",
  },
];

describe("form client domain helpers", () => {
  test("maps stored custom answers to the Other control", () => {
    const state = prepareInitialState(questions, {
      choice: { value: "Custom", imageCdnId: null },
      tags: { value: JSON.stringify(["A", "Custom tag"]), imageCdnId: null },
    });

    expect(state.values.choice).toBe("__OTHER__");
    expect(state.values.tags).toEqual(["A", "__OTHER__"]);
    expect(state.otherValues).toEqual({ choice: "Custom", tags: "Custom tag" });
  });

  test("enforces required answers", () => {
    const schema = buildFormSchema(questions);
    expect(schema.safeParse({ choice: "", tags: [] }).success).toBe(false);
    expect(schema.safeParse({ choice: "A", tags: [] }).success).toBe(true);
  });

  test("parses versioned drafts and rejects malformed JSON", () => {
    expect(
      parseStoredDraft(
        JSON.stringify({ version: 1, answers: { choice: "A" }, otherValues: {} })
      ).answers.choice
    ).toBe("A");
    expect(() => parseStoredDraft("not-json")).toThrow();
  });
});